With the introduction of the Galaxy line (Gemini, Mercury, Reverberocket) in 1964, treble boost circuits and spring reverbs were added, and higher wattage models (such as the 30 watt Gemini II) were made available.Original SVT bass amps are highly sought-after for their pleasing sound and were used by many professional bassists in the '70s.The SVT-VR (Vintage Reissue) is almost identical in design and construction and the closest thing to any of the original SVT models produced by Ampeg.Compared to the major brands Fender and Marshall, the collectability and playability of the guitar amps is a mixed affair.In 1962, Ampeg relocated to Linden, New Jersey, and became a publicly owned company after an initial public stock offering the following year.
Unimusic consisted of investors interested in capitalizing on opportunities in the highly fragmented music equipment manufacturing market of the time, not unlike CBS which owned Fender and Rhodes, or the later Norlin which at times owned various music instrument brands, including Gibson Guitars, Lowrey and Moog Music.
While vintage Fender amps consistently command high prices, Ampeg guitar amps such as the Reverberocket can often be found for prices atypical of vintage amplifiers.
In general, Ampeg guitar amps until 1964 are less desirable as they have a darker, cleaner sound even when pushed hard.
A particular characteristic of Ampeg amplifiers in the 1960s is that they were designed to be used for jazz and other types of music where distortion was not sought after — as Everett Hull had a major contempt for rock and roll music, and his hope that it being merely a "passing fancy" never materializing, had merely manifested his dismissive attitude towards the genre.
Not only did he loathe the presence of rock musicians visiting the (then) New Jersey-based facility, but also his narrow-minded bias served as something of a corporate liability, in his apparent unwillingness to market Ampeg amps to rock musicians; as Ampeg didn't go out of its way to seek endorsements from pop/rock bands and musicians, despite plenty of them using Ampeg products at one time or another.
The closest they came to a rock'n roll endorser at one point, was by way of Joe Long, a left-handed bass player of the Four Seasons, who played the company's Horizontal Bass.